Battery Case With Metallic Frame And Mechanical Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery frame designs face issues with poor sealing and rigidity due to inadequate adhesive distribution and difficulty in accurate positioning, leading to compromised enclosure and sealing properties.
Innovation Solution
A battery case design featuring a resin battery tray with a metallic housing-shaped frame and flange portions fixed using fastening members, enhancing strength, rigidity, and sealability, while allowing for efficient impact energy absorption and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is poured into the clearance between the shielding frame and outer frame, then the shielding frame and outer frame can be fixed together, but the adhesive may fail to extend throughout resulting in poor sealing properties
Solution Approach 1:
The patent replaces the chemical bonding method (adhesive) with a mechanical fastening system using fastening members that physically secure the shielding frame to the outer frame. This substitution eliminates the reliability issues of adhesive distribution while maintaining strong bonding through mechanical interlocking.
Solution Approach 2:
The patent introduces fastening members as intermediary elements between the shielding frame and outer frame. These fastening members serve as mediators that provide reliable mechanical connection and positioning, replacing the direct adhesive bonding approach and ensuring consistent fastening across the assembly.
2Reliability
If adhesive is used to fix the shielding frame and outer frame, then they can be bonded together, but visual inspection of sealing properties is difficult
Solution Approach 1:
The patent utilizes the visual visibility of fastening members (such as bolt heads, nuts, or clips) as indicators of proper assembly. The presence and positioning of these mechanical fasteners serve as visual cues that allow easy inspection and confirmation of correct assembly, replacing the invisible adhesive bonding process.
3Reliability
If a dedicated battery frame is provided under the floor to accommodate batteries, then batteries can be enclosed and protected, but the vehicle structure becomes more complex and occupies loading space
Solution Approach 1:
The patent merges the battery enclosure function with the existing outer frame structure of the vehicle. The shielding frame is integrated into the outer frame through fastening members, eliminating the need for a separate dedicated battery frame. This integration reduces structural complexity while maintaining battery protection and enclosure.
Solution Approach 2:
The outer frame is designed to serve multiple functions: it acts as both the vehicle's structural frame and the battery enclosure housing. By making the frame universal, the patent eliminates the need for separate dedicated battery frames, reducing overall structural complexity and maximizing space utilization.
Data Source
AI summary
A battery case comprises: a battery tray formed from a resin, the battery tray having a bottom wall on which batteries are mounted, and a peripheral side wall which surrounds the periphery of the bottom wall; and a battery cover which covers the battery tray. A flange portion is provided on the upper surface of the peripheral side wall, and a metallic housing-shaped frame is provided beside the outer wall of the battery tray. The flange portion and the battery cover are fixed onto the upper surface of the metallic housing-shaped frame by fastening members.